#include "system/angband.h"
struct activation_type;
-struct object_type;
+class ObjectType;
class PlayerType;
-bool switch_activation(PlayerType *player_ptr, object_type **o_ptr_ptr, const activation_type *const act_ptr, concptr name);
+bool switch_activation(PlayerType *player_ptr, ObjectType **o_ptr_ptr, const activation_type *const act_ptr, concptr name);